Impact driver



FIG. 1 is a right/front perspective view of an impact driver showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a left side view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines and the areas within the broken lines form no part of the claimed ornamental design. 

The ornamental design for an impact driver, as shown and described. 